Who's not looking for canny tricks to ramp up their cool cred when it's cold outside? Layers feel like they're swallowing your style mojo, right? All it takes is some subtle sleeve rolling: show off what lies beneath your winter coat by making your top's sleeve a feature, like this street styler at the menswear shows in London this week. Plus a cool necklace will make a major style statement worn over a turtleneck. Not so hard, huh?